CVE-2024-26130
cryptography NULL pointer deference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash override
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Starting in version 38.0.0 and prior to version 42.0.4, if `pkcs12.serialize_key_and_certificates` is called with both a certificate whose public key did not match the provided private key and an `encryption_algorithm` with `hmac_hash` set (via `PrivateFormat.PKCS12.encryption_builder().hmac_hash(...)`, then a NULL pointer dereference would occur, crashing the Python process. This has been resolved in version 42.0.4, the first version in which a `ValueError` is properly raised.
cryptography es un paquete manipulado para exponer recetas y primitivas criptográficas a los desarrolladores de Python. A partir de la versión 38.0.0 y anteriores a la versión 42.0.4, si se llama a `pkcs12.serialize_key_and_certificates` con un certificado cuya clave pública no coincide con la clave privada proporcionada y un `encryption_algorithm` con `hmac_hash` configurado (a través de `PrivateFormat .PKCS12.encryption_builder().hmac_hash(...)`, entonces se produciría una desreferencia del puntero NULL, bloqueando el proceso de Python. Esto se resolvió en la versión 42.0.4, la primera versión en la que se genera correctamente un `ValueError` .
A flaw was discovered in python-cryptography. A NULL pointer dereference can be triggered when a PKCS#12 key and certificate do not match. Specifically, if the pkcs12.serialize_key_and_certificates function is called with a non-matching certificate and private key and an encryption algorithm with hmac_hash set, the Python process may crash, leading to a denial of service.
CVSS Scores
SSVC
- Decision:Attend
Timeline
- 2024-02-14 CVE Reserved
- 2024-02-21 CVE Published
- 2024-02-22 EPSS Updated
- 2024-08-14 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55 | X_refsource_misc | |
| https://github.com/pyca/cryptography/pull/10423 | X_refsource_misc | |
| https://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4 | X_refsource_confirm |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2024-26130 | 2024-10-10 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2269617 | 2024-10-10 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Pyca Search vendor "Pyca" | Cryptography Search vendor "Pyca" for product "Cryptography" | >= 38.0.0 < 42.0.4 Search vendor "Pyca" for product "Cryptography" and version " >= 38.0.0 < 42.0.4" | en |
Affected
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